Help designing symbol and cutouts for airflow...

zovc

King of Cable Management
Original poster
Jan 5, 2017
852
602
Hey!

I've been making a lot of headway (and getting shocked, apparently) with the system I'm building in my Logic Supply MC600. I took a dremel to the case so I could fit my "DC-ATX" power supply's port that connects it to my AC-DC power brick, and I'm eager to keep working on it. I've done some looking around for services that could do everything right with CNC equipment and I think I'll keep procrastinating if I don't just get my hands dirty and get it done.

So, I'm going back to an idea I originally had when I started talking to Josh about the S4 Mini, and basically I don't want to ruin such a nice case with a mistake so instead I'm working on this MC600. (Which Logic Supply actually gave me for free, very many thanks to them for that.) I'm going to be making a few cuts in the case to allow for airflow and I'm going to cover them with magnetic mesh filters to help manage dust.

The majority of these cuts are basically going to be rectangles, I'm going to cut out the 'mesh' built into the MC600 on the sides, and I'm going to open up the space under my GPU's fans on the bottom of the case. I think I have those figured out.

I'm also going to cut out a symbol on top of the case, roughly above where the CPU cooler is, enabling it to take more are in than a solid panel would. I asked a local vinyl shop (a friend's dad owns) if they could make me a geometrically true version of a quick sketch of the symbol I made, but I'm probably going to try to make my own stencil too so I have some options. But, basically, the symbol is a spiral like this. My current CPU cooler is a Noctua NH-L9i with its 90mm fan, but I'm considering other coolers (especially @Kmpkt's) and trying to rig a larger fan over it.

So, I have a few questions about this 'spiral' cutout, and about helping my case get airflow better in general. In the end I'm more interested in the "form" rather than the "function," but I'd like to at least give consideration to airflow and performance, since there is an overclock-able CPU and GPU in the system.

  • Right now, I'm intending for the spiral to be roughly 120mm in diameter, for the sake of being able to accommodate a 120mm fan but also because a 120mm circle fits the aesthetic I'm going for. Do you have any advice on how "thick" the cutout should be, versus the material left on the panel? Right now I'm thinking 1/4" but I still haven't laid that out and visualized it on the part.
  • I've given thought to trying to 'open up' the panel with tiny holes drilled around the design, effectively creating a mesh. I really don't like the idea of trying to cleanly do this by hand... do you think it would have a worthwhile improvement on the airflow/thermals?
  • I'd like to add rubber feet to the case so that the GPU can properly intake air from the bottom of the case. I'm assuming pretty much any amount of additional height would help, but is there a certain height that would be optimal? Again, I was leaning towards about 1/4".
  • My video card is a Galax GTX 1070 Mini which fits great into the case. I'm not totally in love with the fans on the card, and they do not go below 30%. Do you suspect I'd see better cooling performance by removing the fans on the GPU and installing different/larger after market fans? Has anyone found a "case fan-to-GPU fan" adapter, or is there decent software that can manage specific fans based on GPU temperatures?
Thanks!
 

Honegod

Cable Smoosher
Dec 7, 2017
11
11
"Has anyone found a "case fan-to-GPU fan" adapter, or is there decent software that can manage specific fans based on GPU temperatures?"

I have the same question
 

Honegod

Cable Smoosher
Dec 7, 2017
11
11
but is there a certain height that would be optimal?

Pi X radius squared of fan = area of fan.
Add the lengths of the bottom sides (all 4).
Divide the fan area by the total length of the sides.
= optimal height

Use the same units.

So a 120mm fan = 11,310 square mm area
A 100 x 100mm case bottom = 400mm
11,310 % 400 = 28mm high foots.

Bigger case = shorter feet.
 

owliwar

Master of Cramming
Lazer3D
Silver Supporter
Apr 7, 2017
585
1,081
hi zovc!
Hey!

But, basically, the symbol is a spiral like this. My current CPU cooler is a Noctua NH-L9i with its 90mm fan, but I'm considering other coolers (especially @Kmpkt's) and trying to rig a larger fan over it.

I'd say to make some bridges on this cutout, or else you end up with a dangling piece of metal going into your cpu cooler. such long and continuous cut can make any material very malleable
 
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